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Old 11-02-2014, 11:13 AM
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Need HELP - Oxygen Sensor Replacement

I have a 3.7L 2006 GC and am in the middle of replacing the bank 2, sensor 1 oxygen sensor and can not seem to get the to the wiring harness for the life of me.

The wiring harness is just above what I believe is the trans fluid fill tube, and is lodged between that and the side of the car. How in the hell do I get the harness out of there so I can unclip it and put the new one in?

I tried looking through the engine bay but it seems too far behind the engine to get at. Any help or suggestions is GREATLY appreciated!!!!

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Old 11-02-2014, 02:53 PM
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Re: Need HELP - Oxygen Sensor Replacement

I finally got this done but it took me about 3 hours and my father-in-law had to help me, and that was just to do the passenger side. I'm not sure if there was an easier way or if it was really just this difficult.

Here's how I did it:

1) Unscrewed the O2 sensor
2) Removed the 15mm bolt holding trans tube
3) Broke the zip tie off that was holding the plug to wiring loom
4) Undid clip (had to do this through the wheel well)
5) Clipped new plug on
6) Put oxygen sensor in
7) Bolted trans tube back on

I have another sensor for the driver side, but am holding off until another day. If anyone has any tips, tricks, or pointers on an easier way to get this off, please let me know. I appreciate any help.
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Old 11-28-2014, 06:56 PM
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Re: Need HELP - Oxygen Sensor Replacement

Quote:
Originally Posted by bumpin_jeep View Post
I finally got this done but it took me about 3 hours and my father-in-law had to help me, and that was just to do the passenger side. I'm not sure if there was an easier way or if it was really just this difficult.

Here's how I did it:

1) Unscrewed the O2 sensor
2) Removed the 15mm bolt holding trans tube
3) Broke the zip tie off that was holding the plug to wiring loom
4) Undid clip (had to do this through the wheel well)
5) Clipped new plug on
6) Put oxygen sensor in
7) Bolted trans tube back on

I have another sensor for the driver side, but am holding off until another day. If anyone has any tips, tricks, or pointers on an easier way to get this off, please let me know. I appreciate any help.
Yep. Only way to really get to the passenger side O2 is to take off the transmission fill tube. It comes off easily enough. It's easier if you have someone to help pull at it from the top, while you wiggle it out. The o-ring holds it in pretty well. The hard part for me was getting the wire unplugged and plugged back in with just one hand, as there wasn't enough room for me. I also did it the hard way though. Should have just taken the wheel well off like he did. Funny how being lazy sometimes makes more work for you.

As for the driver side, that was the "easy" one for me. It took a little effort, but all I did was reach in and change it.

Driver side took me about 15 minutes, passenger side took over an hour and a lot of swearing.

I'm glad I won't have to do that again for a long time.
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